Jawabanmu

2014-02-05T19:45:09+07:00
Dik : m = 200kg, v = 4m/s
Dit : EK
Penye
Ek = 1/2 x mv ˆ2
=1/2 x 200 x 4 x4
=1/2 x 200 x 16
=100 x 16
= 1600



2014-02-05T19:45:35+07:00
Ek = ½ . m. v2
Ek = ½ . 200. 42
Ek = 100 . 16

Ek = 1600 Joule